CN108674197A - A kind of power plant and power-driven method suitable for four-drive electric car - Google Patents

Abstract

The invention discloses a power device suitable for four-wheel drive electric vehicles, and proposes a power driving method realized on the basis of the power device, which belongs to the field of dynamics of mechanical effects induced by electric energy, and involves the relationship between electric heat and electromagnetic conversion and other related technologies. The power device in the present invention includes a first power drive module, a second power drive module and a motion conversion module, and the first power drive module and the second power drive module are respectively realized by using the hydroelectric effect combined with the mathematical model of electric explosion in water and electromagnetic reconnection technology For the power drive of electric vehicles, the motion conversion module converts the reciprocating linear motion generated in the power drive module into circular motion, and drives the wheels to rotate. Compared with traditional motors and engines, the present invention is no longer limited to the shape of the power drive module. At the same time, tap water is selected as the working medium, and pulse discharge is used to generate power. The work efficiency is high, the safety is good, no waste gas is produced, and it has the advantages of being green and healthy. .

Description

A kind of power device and power driving method suitable for four-wheel drive electric vehicle

technical field

The invention belongs to the field of dynamics of mechanical effects induced by electric energy, and specifically relates to a power device and a power driving method suitable for four-wheel drive electric vehicles, and relates to related technologies such as electric heating and electromagnetic conversion relations.

Background technique

In the crisis situation of energy constraints and environmental pollution, it is an inevitable trend to use electric energy, a clean energy source, to replace fossil energy sources, so new energy vehicles have emerged. On the basis of the hydroelectric effect, combined with the mathematical model of electric explosion in water and electromagnetic reconnection technology, it can provide a new driving force for pure electric vehicles.

An explosion in infinite water is different from an explosion in infinite air. The compression coefficient of water can be considered to be constant. The peak of the shock wave caused by the explosion in the water is larger than that in the air, and the attenuation is smaller as the distance increases. Much smaller in air. Yutkin, a scientist of the former Soviet Union, discovered the electric water hammer effect and divided the discharge area into spark discharge area, damage area, hardening area, elastic action area and compression area, and proposed the method of adding auxiliary gaps to increase energy storage density and discharge voltage. And the steep slope of the discharge current, in which the damage zone and the hardening zone will have a destructive effect on the material. The electrohydraulic effect is mostly used in liquids in an open or semi-open environment, where a strong pulse current is applied instantaneously, and the resulting electric explosion produces shock waves with destructive effects in the water. If the above-mentioned electric water hammer model is directly applied to the automobile power plant, there are mainly the following defects: the required voltage level is too high; the mechanical damage is large; the mechanical conversion efficiency is low; the discharge frequency is low. Possible improvement methods: change the discharge peak value so that there will be no damage to the piston material; choose suitable materials to make a closed working fluid cylinder; use an inductor suitable for high frequency and high energy storage density as an auxiliary gap to increase the discharge frequency.

The reconnection electromagnetic technology is a form of electromagnetic conversion. The two solenoid coils are coaxial and the magnetic flux direction is the same. At the same time, the two solenoid coils are fed with current, and a closed magnetic field is generated between the two electrified solenoid coils. The non-magnetic good conductor in the center of the closed magnetic field divides the magnetic field generated by the two helical coils, and the divided magnetic field lines need to be "reconnected" and "straightened", so the radial component of the non-ferromagnetic good conductor is very large electromagnetic force.

The patent application number is CN201510068593.X "An Electromagnetic Reconnection Motor", which proposes a motor designed using the principle of electromagnetic reconnection, but only uses the electromagnetic principle and does not involve the theory of electric explosion. Its structure is different from that of traditional motors. The structure is similar, they all use the magnetic field to accelerate the rotation of the rotor body. Its shape must be a cylinder, and its power output can only have one rotating shaft. If the four-wheel drive also needs to add a lot of transmission components.

The patent application number is CN201710893793.8 "Low Power Arc Heating Thruster", which proposes a propeller designed using electrothermal theory. The working fluid added between the two electrodes is fuel propellant, and its principle is similar to rocket propulsion , the power is generated through the explosion of fossil fuels, and the explosion directly acts on the air. The environment used by the power device is an open environment, and it does not use the mechanical effect caused by liquid electricity to provide power.

The patent application number is CN200310105971 "high-current pulse discharge water pump", which proposes a shock wave caused by the explosion of the discharge pulse in the working medium by using the electric water hammer effect. The disadvantage is that the mechanical action caused by it is inefficient, destructive and Low discharge frequency, not suitable for power supply.

Therefore, in combination with the current situation of electric vehicle power development, the present invention proposes a power device suitable for four-wheel drive electric vehicles, and proposes a power driving method realized on the basis of the power device, utilizing the hydroelectric effect, and Combining the mathematical model of electric explosion in water and electromagnetic reconnection technology to provide power for pure electric vehicles.

Contents of the invention

The purpose of the present invention is to provide a power device suitable for four-wheel electric vehicles, which uses a dual power drive module to provide power and uses a motion conversion device to drive the wheels. , combined with the mathematical model of electric explosion in water and electromagnetic reconnection technology to realize the power drive method suitable for four-wheel drive electric vehicles.

The purpose of the present invention is achieved like this:

The present invention proposes a power device suitable for four-wheel drive electric vehicles. The power device A is entirely rectangular and laid on the chassis of the vehicle, including a first power drive module, a second power drive module and a motion conversion module. The first power drive module The module and the second power drive module are installed on the same axis, and the first power drive module is respectively installed on both sides of the second power drive module; the motion conversion module is installed at both ends of the first power drive module, and the first power drive module and the linear motion generated by the second power drive module is converted into circular motion, and is connected to the wheels 1 of the four-wheel drive electric vehicle respectively;

The first power drive module includes a piston 10, a working medium 11, a discharge column 12, a one-way high pressure valve 13, a working medium cylinder discharge column power line 14, a working medium cylinder 18 and a first power supply module, wherein the first power supply module includes a second power supply module. A battery pack 7-1, a power control unit 15, an auxiliary gap 16 and a booster module 17; the piston 10 is a symmetrical structure, including two parts, the inner side of each part is arc-shaped, and the outer side is upright, and the piston is installed in the working fluid cylinder. A cavity-shaped space is formed between the two parts, and the size of the cavity-shaped space changes with the movement of the piston. The range of piston movement corresponds to the size of the working medium cylinder 18; the working medium 11 is located in the cavity-shaped space; the discharge column 12 is a needle-shaped structure , the upper and lower ends are fixed on the working medium cylinder 18, the middle part is located inside the piston 10, and is connected to the power supply module through the power supply line 14 of the working medium cylinder discharge column; the one-way high pressure valve 13 is installed on the upper and lower sides of the working medium cylinder 18, and the working medium 11 is injected into the working medium cylinder 18 through the one-way high-pressure valve 13, and the volume of the injected working medium 11 is controlled by the switching time of the one-way high-pressure valve 13; The auxiliary gap 16 is connected, and then the auxiliary gap 16 is connected to the power line 14 of the working medium cylinder discharge column through the power control unit 15;

The working medium 11 is tap water;

The second power drive module includes a mover reciprocating shaft 4, an electromagnetic reconnection device, a second power supply module, and a drive coil trigger control module, wherein the electromagnetic reconnection device includes a mover piece 5 and a drive coil 6, and the second power supply module includes a second power supply module. Two storage battery packs 7-2, drive coil transmission line 8, drive coil control switch 9, the drive coil trigger control module includes a moving switch 20, a moving switch 21, a relay KM1 23 and a relay moving contact 24; an electromagnetic reconnection device The middle mover piece 5 is installed on the mover reciprocating shaft 4 with the mover reciprocating axis 4 as a symmetrical axis, and the two drive coils 6 are respectively installed on both sides of the mover piece 5, and the axis of the drive coil 6 and the movement of the mover piece 5 The direction is vertical; the drive coil power line 8 in the second power supply module connects the electromagnetic reconnection device with the second battery pack 7-2, and the drive coil control switch 9 is installed between the second battery pack 7-2 and the drive coil power line 8 Between, control the power supply of the second battery pack 7-2 to the drive coil 6 by opening and closing, wherein the opening and closing of the drive coil control switch 9 is controlled by the drive coil trigger control module;

The motion conversion module includes a motion conversion device 2, a wheel drive shaft 3, a power unit rotating shaft 22 and a gear box 26, wherein the motion conversion device 2 includes a follower 19; the motion conversion device 2 is installed at both ends of the second power drive module, from The movable part 19 is installed on the reciprocating shaft 4 of the mover, and is connected with the trigger control module of the drive coil at the same time, and is driven by the reciprocating shaft 4 of the mover to trigger the closing switch 20 or the breaking switch 21; the movement conversion device 2 is driven by the wheel The shaft 3 is connected, and the wheel drive shaft 3 is outwardly connected to the wheel 1. One end of the power unit shaft 22 is connected with the follower 19, and the other end is connected with the gear box 26. The follower 19 drives the power unit shaft 22 to rotate, and the power unit shaft 22 Drive the wheel drive shaft 3 and the wheel 1 to rotate after the gear box 26 changes the ratio.

Preferably, both the first battery pack 7-1 and the second battery pack 7-2 are equipped with a main power switch 25 .

Preferably, the shape of the discharge column 12 is "needle-needle", the material is copper, and the tip is coated with an insulating layer.

Preferably, the stroke between the contacts of the moving-on switch 20 and the moving-off switch 21 is determined by the single working time of the first power drive module.

Preferably, the material of the working fluid cylinder 18 is a non-conductive material with a certain hardness and high temperature resistance.

For a power device suitable for four-wheel drive electric vehicles, the first power drive module, the second power drive module and the motion conversion module are a group of power groups, and the power device includes N groups of power groups; at the same time, the second power drive module Include N groups of electromagnetic reconnecting devices, wherein the size of M and N is determined according to the power capacity required by the vehicle; the length of the reciprocating shaft 4 of the mover in the second power drive module is determined according to the wheelbase of the vehicle.

For a power device suitable for four-wheel drive electric vehicles, each group of electromagnetic reconnection devices in the second power drive module includes two coaxial drive coils 6 and a mover piece 5; the enameled wire in the drive coil 6 The winding direction is the same, the two driving coils 6 are coaxial, and the cross-sectional area of the moving sub-piece 5 is exactly the same as the cross-sectional area surrounded by the two driving coils 6; the moving sub-piece 5 is a good non-magnetic conductor.

The present invention also provides a power driving method suitable for four-wheel drive electric vehicles. The power device is driven by the power of the first power driving module and the second power driving module. The reciprocating linear motion of the reciprocating shaft of the mover is converted into the circular motion of the rotating shaft of the power device, and drives the wheels to rotate, which specifically includes the following steps:

(1) The first power drive module triggers a mechanical effect through hydroelectricity to provide power drive for the reciprocating shaft of the mover;

(1.1) Inject an appropriate amount of tap water into the working fluid cylinder through the one-way high-pressure valve to keep the piston at the initial position;

(1.2) Turn on the main switch of the power plant, the first power supply module will work, the first battery pack will charge the auxiliary gap after being boosted by the booster module, and the power control unit will instantly connect the auxiliary gap and the The discharge column supplies power to the discharge column;

(1.3) A strong pulse current is formed between the discharge columns, and a discharge channel is formed in the tap water. The water around the discharge channel is rapidly vaporized to generate a large amount of steam to form a high-temperature and high-pressure steam mass. The liquid moves strongly, pushing the piston from the initial position to move to both sides , and finally stop at the end position;

(1.4) After the steam mass in the working fluid cylinder expands to the maximum volume, a pinching force is generated, that is, the second hydraulic impact force, which pulls the piston back from the end position to the initial position;

(2) The second power drive module induces a mechanical effect through electromagnetic reconnection, and provides power drive for the reciprocating shaft of the mover;

(2.1) Under the influence of the piston, the reciprocating shaft of the mover and the mover sheet move to both sides, which provides the initial energy for the mover sheet to leave the closed magnetic field of the drive coil. The moving shaft triggers the closing switch, and the driving coil triggers the control module to work;

(2.2) The driving coil triggers the relay KM1 in the control module to pull in, the relay moving contact is closed, the driving coil triggers the self-locking of the control module, the driving coil control switch is closed, the second power supply module works, and the driving coil is excited;

(2.3) The two drive coils in the electromagnetic reconnection device generate a magnetic field perpendicular to the mover piece, and are subjected to the action of electromagnetic reconnection, and the mover piece moves from position X to position Y. During this process, the mover piece is always subjected to the force from the magnetic field The thrust in the same direction as the movement until the mover piece moves to position Y;

(2.4) When the mover moves to the position, the follower triggers the break switch, the drive coil triggers the release of the relay KM1 in the control module, the drive coil control switch is disconnected, and the drive coil is powered off;

(2.5) The magnetic field generated by the driving coil disappears, and under the inertia of the reciprocating axis of the mover and the action of the piston, the mover piece moves from position Y to position X;

(3) Driven by the power of the first power drive module and the second power drive module, the reciprocating axis of the mover reciprocates along both sides symmetrically to the center line of the discharge, and the motion conversion module converts the reciprocating linear motion of the reciprocating axis of the mover into The circular motion of the rotating shaft of the power unit, the rotating shaft of the power unit directly acts on the wheels through the ratio of the gear box, driving the wheel drive shaft and the wheels to rotate.

Preferably, when the piston is in the initial position, the mover plate and the driving coil are at position X, and the follower triggers the closing switch; when the piston moves to the end position, the mover plate and the drive coil move to position Y, and the driven event triggers the disconnect switch.

Preferably, the rotation directions of the followers corresponding to the rotation shafts of the power device installed on both sides of the second power drive module are opposite, so as to ensure that the front and rear wheels of the vehicle rotate in the same direction.

The beneficial effects of the present invention are:

The invention provides a power device suitable for four-wheel drive electric vehicles. Compared with the traditional motor, the invention directly uses direct current, uses tap water as the working medium, and uses two parts of electromagnetic force and electric heat to provide power, and its shape is no longer limited to Cylindrical;

At the same time, compared with the traditional engine, after the gas and fuel in the cylinder of the traditional engine are pulse-discharged by the spark plug, an explosion will be generated to make the gas expand to do work on the piston and generate exhaust gas at the same time. However, the working medium used in the present invention is no longer fuel but tap water , does not need to be adulterated with fossil fuels and does not generate waste;

In addition, one power unit in the present invention can provide two or more synchronous bearings with adjustable distances, and the four rotating shafts can be directly used as the transmission shafts of the front and rear wheels of the car, and the four-wheel drive does not need complicated intermediate transmission devices;

The mover piece in the electromagnetic reconnection device of the present invention provides driven and boosting power when moving to cut the magnetic field formed by the driving coil, and has nothing to do with the speed at the same time, which improves the working efficiency and safety of the power device.

Description of drawings

Fig. 1 is the schematic diagram of the principle of the overall structure of the power plant in the present invention;

Fig. 2 is a schematic diagram of the position of the piston in the first power drive module and the moving plate in the second power drive module before and after movement in the present invention;

Fig. 3 is a schematic diagram of the structure and relative position of the moving sub-piece and the driving coil in the present invention, Fig. 3(a) is a schematic diagram when the moving sub-piece is at position x, and Fig. 3(b) is a schematic diagram when the moving sub-piece is at position y schematic diagram;

Fig. 4 is the synoptic diagram that motion conversion module cooperates with other modules in the present invention;

5 is a schematic diagram of a drive coil trigger control module in the present invention;

Figure 6 is a schematic diagram of the relative position of the mover piece and the reciprocating shaft of the mover in the present invention, Figure 6(a) is a schematic diagram of the relative position in Embodiment 1, and Figure 6(b) is a schematic diagram of the relative position in Embodiment 2;

Fig. 7 is a schematic diagram of relative positions of the power unit and the rotating shaft of the power unit in the present invention.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings.

Example 1

1 to 7, the present invention discloses a power device and a power driving method suitable for a four-wheel drive electric vehicle, including a battery pack 7, a boost module 17, an auxiliary gap 16, a power control unit 15, and a working fluid cylinder discharge column Power line 14, working fluid cylinder 18, discharge column 12, one-way high pressure valve 13, and piston 10 form the first part of the power source of the power plant. Inject an appropriate amount of tap water into the working medium cylinder 18 through the one-way high-pressure valve 13 so that the piston 10 is at position 1, turn on the main switch 25 of the power plant, and the battery pack 7 will charge the auxiliary gap 16 after being boosted by the booster module 17. The control unit 15 instantly connects the auxiliary gap 16 and the discharge column 12 through the power line 14 of the discharge column of the working medium, and a strong pulse current is formed between the two discharge columns 12, and a discharge channel is formed in the tap water, and the water around the discharge channel vaporizes rapidly to generate a large amount of The steam forms a high-temperature and high-pressure steam cluster, which further moves the liquid strongly and pushes the piston 10 to move from position 1 to position 2. The steam cluster in the working medium cylinder 18 expands to the maximum volume and generates a pinch force, that is, the second liquid The impact force pulls the piston 10 from position 2 to position 1.

Mover reciprocating shaft 4, mover piece 5, drive coil 6, drive coil power line 8, battery pack 7, drive coil control switch 9, move-on switch 20, move-off switch 21, relay 23, relay move-on contact 24 1. The follower 19 forms the second part of the power source of the power device. When the follower 19 is in the position I, trigger the closing switch 20, the driving coil triggers the relay KM1 in the control device as shown in Figure 4 to pull in, the relay moving contact 24 closes, the driving coil triggers the control device to lock itself, and The coil control switch 9 is closed to excite the driving coil 6. At this time, the two driving coils 6 in one group generate a magnetic field perpendicular to the moving sub-piece 5, and are subjected to the action of electromagnetic heavy relay, and the moving sub-piece 5 moves from position X to position Y. During this process, the mover piece 5 has been subjected to a thrust consistent with the moving direction until the mover piece 5 moves to position Y. When the mover piece 5 moves to position Y, the follower 19 is at position II, triggering the break switch 21, the drive coil triggers the release of the relay KM1 in the control device (Figure 4), the drive coil control switch 9 is disconnected, and the drive coil 6 Power off, the magnetic field generated by the two drive coils 6 in one group disappears, and the mover plate 5 is not subjected to the action of electromagnetic heavy relay force when it moves from position Y to position X, but is affected by the inertia of the mover reciprocating shaft 4 and the force of the piston 10 As a result, the mover piece 5 moves from position Y back to position X. When designing the device, in order to enable the drive coil 6 to be normally excited, when the mover piece 5 and the drive coil 6 are at position X, the follower 19 is at position I, triggering the closing switch 20, and the mover piece 5 and the drive coil 6 are at position X. In position Y, the follower 19 is in position II, triggering the disconnect switch 21 .

The motion conversion device 2, the wheel drive shaft 3, the power unit rotating shaft 22, and the gear box 26 form the motion conversion unit of the power unit. Under the joint action of the above two parts of force, the mover reciprocating shaft 4 performs reciprocating motion, and the follower 19 converts the reciprocating linear motion of the mover reciprocating shaft 4 into the circular motion of the power device rotating shaft 22, and the power device rotating shaft 22 passes through the gearbox After 26 transformation ratios, the wheel drive shaft 3 and the automobile wheel 1 are driven to rotate.

Example 2

Same as Example 1, the difference is:

Taking the axis of the reciprocating shaft 4 of the mover as the x-axis in the space Cartesian coordinate system as an example, the reciprocating shaft 4 of the mover is improved, and the improvement scheme of the reciprocating shaft 4 of the mover is explained. In Example 1, the mover pieces 5 are distributed on the xoy plane of the mover reciprocating shaft 4 as shown in Fig. The axis of 4 is the boundary, which is distributed on the left and right sides of the axis. According to the direction of the x-axis, there is a certain distance between two adjacent groups of mover pieces 5. This distance is the same as the length of the mover piece 5. The purpose is to ensure that the mover When the sheet 5 leaves the closed magnetic field generated by the driving coil 6 , it does not enter the closed magnetic field generated by the adjacent group of driving coils 6 . On the basis of Example 1, the adjacent two sets of mover pieces 5 are respectively distributed on the xoy and xoz planes of the mover reciprocating axis 4 as shown in Figure 6(b), and a corresponding mover piece 5 needs to be added corresponding to If there are two drive coils 6, then one set of mover pieces 5 (two) needs to add two sets of drive coils 6 (four). Taking the axis of the mover reciprocating shaft 4 as the boundary, the improved mover pieces 5 are distributed on the upper, lower, left, and right sides of the shaft, as shown in Figure 6(b), and the adjacent two groups of mover pieces 5 are arranged in a staggered manner. The set of drive coils 6 is distributed in the upper left, lower left, upper right, and lower right directions of the two moving sub-pieces 5. According to the direction of the x-axis, the magnetic force lines of the closed magnetic field generated by the driving coils 6 of the two adjacent groups of moving sub-pieces 5 The direction is different, divided into left and right direction and up and down direction, the purpose is to ensure that when the mover piece 5 leaves the closed magnetic field generated by the driving coil 6, it will not enter the closed magnetic field generated by the adjacent group of driving coils 6. Compared with Embodiment 1, the space utilization rate is improved, and other structures of the power device remain unchanged, and Embodiment 2 can make the device provide greater power per unit length.

Embodiments in the present invention are realized through the following technical principles:

The shape of the power unit is rectangular, which is suitable for laying on the chassis of the car to replace the motor of the electric car to provide power. The power of the whole device is composed of two parts, one part is caused by the hydroelectric effect of the water in the working fluid cylinder 18, which is similar to the principle of the engine cylinder, which is the energy generated by the explosion to push the piston to reciprocate. The difference is that the engine cylinder is filled with gas and fuel. After being pulse-discharged by the spark plug, the resulting explosion causes the gas to expand to do work on the piston and generate exhaust gas at the same time. The working medium in the working medium cylinder 18 in the patent of the present invention is not air but tap water, which does not need to be mixed with fossil fuels and does not produce waste. There is a pair of discharge columns 12 in the working fluid cylinder 18 to provide pulse discharge, which will generate high-temperature and high-pressure steam clusters that first expand and then contract. The expansion and contraction of the steam clusters are transmitted to the piston 10 through almost incompressible tap water, driving the piston 10 to reciprocate Movement; the other part of the force is provided by the electromagnetic reconnection device composed of the moving sub-piece 5 and the driving coil 6. This part of the device has the advantages of driven, power-assisted, and speed-independent. When the position of the mover piece 5 and the drive coil 6 is at the position X and the position Y, as shown in FIG. 3 , no power can be provided, and the mover reciprocating shaft 4 and the mover piece 5 are moved to both sides by the action of the piston 10, Provides the initial energy for the mover piece 5 to leave the closed magnetic field of the two drive coils 6. During the process of moving the mover piece 5 from position X to position Y, it will receive an electromagnetic reconnection thrust from the magnetic field that is consistent with the direction of motion, and this Thrust has nothing to do with speed of movement. In order to ensure that the mover piece 5 will not be resisted when it enters the magnetic field, when the mover piece 5 moves back to the position X from the position Y, the power supply of the driving coil 6 is cut off, and the battery pack 7 is used to provide electric energy for the power device. The voltage level is divided into two levels: the first level is that the battery pack 7 directly supplies power to the drive coil 6 through the drive coil control switch 9; The control unit 15 and the power line 14 of the working fluid cylinder discharge column act on the discharge column 12 . The material of the working medium cylinder 18 is a non-conductive material with certain hardness and high temperature resistance. In order to increase the peak value of the discharge current, the discharge column 12 adopts a "needle-needle" shape, is made of copper, and is coated with an insulating layer at the tip, and at the same time minimizes the surface area of the electrode exposed to the water to increase the discharge length and reduce the mechanical effect. enhanced. The material of the piston 10 should be able to bear the energy transmitted from the working medium in the working medium cylinder 18, and it should not be a conductor. The winding directions of the enameled wires in all drive coils 6 are the same, and the corresponding two drive coils 6 in one group are coaxial. force. The motion produced by the two parts that provide power is linear reciprocating motion, through the motion conversion device 2, as shown in Figure 4, the reciprocating linear motion is converted into the circular motion of the power device rotating shaft 22, and the four synchronous power device rotating shafts provided by the power device 22 directly acts on the automobile wheel 1 after the gear box 26 changes the ratio. The mover reciprocating shaft 4 is symmetrical to the discharge center line and moves to both sides. In order to ensure that the front and rear wheels rotate in the same direction, the method adopted is to let the driven part in the motion conversion device 2 corresponding to the two power unit rotating shafts 22 (see Figure 4) The direction of rotation of the member 19 is opposite, for example, the driven member 19 in the rotating shaft of the power unit (Fig. 7 left side) rotates clockwise, and the driven member 19 in the rotating shaft of the power unit (Fig. 7 right side) rotates counterclockwise, like this It can be ensured that the two front and rear rotating shafts in the power unit (see the left and right rotating shafts in Fig. 7) move in the same direction, thereby driving the four wheels 1 of the automobile to rotate in the same direction. The contacts of the moving-on switch 20 and the moving-off switch 21 must have a certain stroke, because after a pulse discharge, there are over-compressed air bubbles in the working fluid cylinder 18 besides tap water, and a second pulse discharge is required at this time. If the switch contact stroke is too short, the drive coil 6 cannot be excited normally. The size and power of the power unit of the present invention can be changed according to needs. For example, if you want to increase the wheelbase of the automobile and improve the power of the automobile, you can increase the length of the reciprocating shaft 4 of the mover and the corresponding numbers of the drive coils 6 and the mover pieces 5. It is also possible to upgrade the 4 groups in Fig. 1 to 8 groups and other methods.

The power source of this power unit is divided into two parts:

(1) Mechanical effects induced by hydroelectricity

By feeding the two discharge columns 12 with high-voltage (for example, 1kV) pulses and large currents, although there is no explosion product quality, the explosion energy vaporizes the nearby water in the form of radiation heating to form a high-temperature and high-pressure water vapor ball, and its internal pressure is far more than The static pressure of the surrounding aqueous medium. The expansion of the high-pressure balloon is hindered by the surrounding water, so a shock wave (mainly a radial wave) propagating outward is formed in the water, that is, the first hydraulic shock wave. As soon as the discharge is over, the cavity wall closes at the speed of sound or supersonic speed. At this time, the gas and steam are also condensed or dissolved, forming a cavitation phenomenon, and the second hydraulic shock wave appears. The main shock wave expands outwards in the water, pressurizes the water everywhere suddenly, and accelerates the water movement. Since the compressibility coefficient of the water is very low, almost all the mechanical effects produced by the electric explosion are transmitted to the piston 10. The high-temperature and high-pressure balloon first expands, and the expansion speed is much slower than the shock wave speed. When the pressure of the balloon drops to equal to the internal pressure of the liquid in the working medium cylinder 18 at the same time, due to the inertial motion of water, the balloon continues to expand, and the pressure continues to drop until a certain At this moment, the balloon stops expanding. Care should be taken when designing the size of the working medium cylinder. Combined with the strength generated by the electric explosion, the position of the piston is just at the edge of the working medium cylinder (position 2) when the bubble stops expanding, maximizing the mechanical efficiency. Due to the excessive expansion of the high-temperature and high-pressure balloon, the gas pressure in the balloon is already far lower than the static pressure of the surrounding liquid, and the contraction process of the bubble begins due to the action of the second hydraulic shock wave, which drives the piston 10 to perform a contraction movement. Due to the effect of inertial water flow, excessively compressed air bubbles appear, and a balloon pulsation process is completed at this time.

(2) Mechanical effects caused by reconnection principle

A unit is composed of two coaxial drive coils 6 and a mover piece 5. The axis of the drive coil 6 is perpendicular to the moving direction of the mover piece 5. The cross-sectional area of the mover piece 5 is surrounded by two coaxial drive coils 6. The cross-sectional areas are exactly the same, which ensures that the closed magnetic field generated by the mover piece 5 and the drive coil 6 is well coupled. When the cross-sectional area of the moving sub-piece 5 and the driving coil 6 just overlap (as shown in Figure 3 a), the driving coil 6 is excited. At this time, the closed magnetic force lines generated by the two driving coils 6 are blocked by the sub-piece 5, and the magnetic lines of force on both sides of the moving sub-piece 5 cannot Reconnect. Under the thrust from the piston 10, the mover piece 5 moves to both sides. At this time, the upper and lower magnetic force lines are reconnected on the path passed by the mover piece 5, and some of the bent magnetic force lines will straighten, which creates a connection with the piston. 10 thrust in the same direction until the mover piece 5 is completely pushed out of the closed magnetic field generated by the drive coil 6 . The advantage of the electromagnetic re-relay is that the magnitude of the force has nothing to do with the speed. When the mover piece 5 is outside the magnetic field of the drive coil 6 (as shown in b in Figure 3), the drive coil 6 is powered off by the drive coil control device (Figure 5), so that when the mover piece 5 enters the two drive coils 6 surrounded When the cross-sectional area is formed, there is no closed magnetic force line between the two driving coils 6, and the mover piece 5 will not receive resistance when moving from position Y to position X, until the mover moves back to the initial position X (a in Figure 3).

When designing the device, in order to make the two parts highly coupled, the driving coil 6 and the moving piece 5 are at position X when the piston 10 is at position 1, and the driving coil 6 and moving piece 5 are at position Y when the piston 10 is at position 2, as Figure 2 shows.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims (10)

1. A power unit suitable for four-wheel-drive electric vehicles, characterized in that: the whole power unit (A) is rectangular, laid on the chassis of the vehicle, including a first power drive module, a second power drive module and a motion conversion module, The first power drive module and the second power drive module are installed on the same axis, and the first power drive module is respectively installed on both sides of the second power drive module; the motion conversion module is installed at both ends of the first power drive module, and the second power drive module is installed The linear motion generated by the first power drive module and the second power drive module is converted into circular motion, and simultaneously connected with the wheels (1) of the four-wheel drive electric vehicle; The first power drive module includes piston (10), working medium (11), discharge column (12), one-way high pressure valve (13), working medium cylinder discharge column power line (14), working medium cylinder (18) and the second A power supply module, wherein the first power supply module includes a first storage battery pack (7-1), a power control unit (15), an auxiliary gap (16) and a booster module (17); the piston (10) is a symmetrical structure, including There are two parts on the left and right, the inside of each part is arc-shaped, and the outside is upright. The piston is installed in the working medium cylinder, and a cavity-shaped space is formed between the two parts. The size of the cavity-shaped space changes with the movement of the piston. The range of piston movement is the same as that of the working medium cylinder. The size of (18) is corresponding; the working medium (11) is located in the cavity-shaped space; the discharge column (12) is a needle-shaped structure, the upper and lower ends are fixed on the working medium cylinder (18), and the middle part is located inside the piston (10) , connected to the power supply module through the power line (14) of the working medium cylinder discharge column; the one-way high-pressure valve (13) is installed on the upper and lower sides of the working medium cylinder (18), and the working medium (11) is injected through the one-way high-pressure valve (13) In the working medium cylinder (18), the volume of the working medium (11) passing through is controlled by the switching time of the one-way high-pressure valve (13); the first battery pack (7-1) in the first power supply module ) is connected with the auxiliary gap (16), and then the auxiliary gap (16) is connected to the power supply line (14) of the working fluid cylinder discharge column through the power control unit (15); Described working fluid (11) is tap water; The second power drive module includes a mover reciprocating shaft (4), an electromagnetic reconnection device, a second power supply module and a drive coil trigger control module, wherein the electromagnetic reconnection device includes a mover piece (5) and a drive coil (6), The second power supply module includes a second storage battery pack (7-2), a drive coil power line (8), a drive coil control switch (9), and the drive coil trigger control module includes a move-on switch (20), a move-off switch (21) , relay KM1 (23) and relay moving contact (24); in the electromagnetic reconnection device, the mover sheet (5) is installed on the mover reciprocating shaft (4) with the mover reciprocating shaft (4) as the symmetrical axis, and the two The two drive coils (6) are respectively installed on both sides of the mover piece (5), and the axes of the drive coils (6) are perpendicular to the moving direction of the mover piece (5); the drive coil power lines (8) in the second power supply module The electromagnetic reconnection device is connected with the second storage battery pack (7-2), and the drive coil control switch (9) is installed between the second storage battery pack (7-2) and the drive coil power line (8), and the Controlling the power supply of the second battery pack (7-2) to the drive coil (6), wherein the opening and closing of the drive coil control switch (9) is controlled by the drive coil trigger control module; The motion conversion module includes a motion conversion device (2), a wheel drive shaft (3), a power plant rotating shaft (22) and a gear box (26), wherein the motion conversion device (2) includes a follower (19); the motion conversion device (2) Installed at both ends of the second power drive module, the follower (19) is installed on the mover reciprocating shaft (4), and is connected with the drive coil trigger control module at the same time, driven by the mover reciprocating shaft (4) Trigger the moving-on switch (20) or the moving-off switch (21); the motion conversion device (2) is connected through the wheel drive shaft (3), and the wheel drive shaft (3) is connected to the wheel (1) outwardly, and the power unit shaft (22) One end is connected with the follower (19), and the other end is connected with the gear box (26). The follower (19) drives the power unit shaft (22) to rotate, and the power unit shaft (22) passes through the gear box (26) After the ratio is changed, the wheel drive shaft (3) and the wheel (1) are driven to rotate. 2. A power plant suitable for four-wheel drive electric vehicles according to claim 1, characterized in that: both the first battery pack (7-1) and the second battery pack (7-2) are installed There is a power unit main switch (25). 3. A power device suitable for four-wheel drive electric vehicles according to claim 1, characterized in that: the shape of the discharge column (12) is "needle-needle", the material is red copper, and the tip is coated with There is insulation. 4. A power device suitable for four-wheel drive electric vehicles according to claim 1, characterized in that: the stroke between the contacts of the moving-on switch (20) and the moving-off switch (21) is determined by the first The single working time of a power drive module is determined. 5. A power device suitable for four-wheel drive electric vehicles according to claim 1, characterized in that: the material of the working fluid cylinder (18) is a non-conductive material that meets a certain hardness and is resistant to high temperature. 6. A power device suitable for four-wheel drive electric vehicles according to claim 1, characterized in that: the first power drive module, the second power drive module and the motion conversion module are a group of power groups, and the power device includes N groups of power groups; at the same time, the second power drive module includes N groups of electromagnetic reconnection devices, wherein the size of M and N is determined according to the power capacity required by the car; the length of the mover reciprocating shaft (4) in the second power drive module It depends on the wheelbase of the car. 7. A kind of power plant suitable for four-wheel drive electric vehicles according to claim 1, characterized in that: each group of electromagnetic reconnecting devices in the second power drive module includes two coaxial drive coils (6 ) and a mover sheet (5); the winding direction of the enameled wire in the drive coil (6) is the same, the two drive coils (6) are coaxial, and the cross-sectional area of the mover sheet (5) is equal to that of the two drive coils (6) The enclosed cross-sectional areas are exactly the same; the mover piece (5) is a good non-magnetic conductor. 8. A power driving method suitable for four-wheel drive electric vehicles, characterized in that the power device is driven by the power of the first power drive module and the second power drive module, the reciprocating axis of the mover performs linear reciprocating motion, and the motion conversion module Converting the reciprocating linear motion of the reciprocating shaft of the mover into the circular motion of the rotating shaft of the power device, and driving the wheels to rotate, specifically includes the following steps: (1) The first power drive module triggers a mechanical effect through hydroelectricity to provide power drive for the reciprocating shaft of the mover; (1.1) Inject an appropriate amount of tap water into the working fluid cylinder through the one-way high-pressure valve to keep the piston at the initial position; (1.2) Turn on the main switch of the power plant, the first power supply module will work, the first battery pack will charge the auxiliary gap after being boosted by the booster module, and the power control unit will instantly connect the auxiliary gap and the The discharge column supplies power to the discharge column; (1.3) A strong pulse current is formed between the discharge columns, and a discharge channel is formed in the tap water. The water around the discharge channel is rapidly vaporized to generate a large amount of steam to form a high-temperature and high-pressure steam mass. The liquid moves strongly, pushing the piston from the initial position to move to both sides , and finally stop at the end position; (1.4) After the steam mass in the working fluid cylinder expands to the maximum volume, a pinching force is generated, that is, the second hydraulic impact force, which pulls the piston back from the end position to the initial position; (2) The second power drive module induces a mechanical effect through electromagnetic reconnection, and provides power drive for the reciprocating shaft of the mover; (2.1) Under the influence of the piston, the reciprocating shaft of the mover and the mover piece move to both sides, which provides the initial energy for the mover piece to leave the closed magnetic field of the drive coil. The moving shaft triggers the closing switch, and the driving coil triggers the control module to work; (2.2) The driving coil triggers the relay KM1 in the control module to pull in, the relay moving contact is closed, the driving coil triggers the self-locking of the control module, the driving coil control switch is closed, the second power supply module works, and the driving coil is excited; (2.3) The two driving coils in the electromagnetic reconnection device generate a magnetic field perpendicular to the moving sub-piece, and under the action of the electromagnetic re-relay force, the moving sub-piece moves from position X to position Y. During this process, the moving sub-piece is always subjected to the force from the magnetic field The thrust in the same direction as the movement until the mover piece moves to position Y; (2.4) When the mover piece moves to the position, the follower triggers the break switch, the drive coil triggers the release of the relay KM1 in the control module, the drive coil control switch is disconnected, and the drive coil is powered off; (2.5) The magnetic field generated by the driving coil disappears, and under the inertia of the reciprocating axis of the mover and the action of the piston, the mover piece moves from position Y to position X; (3) Driven by the power of the first power drive module and the second power drive module, the reciprocating axis of the mover reciprocates along both sides symmetrically to the discharge center line, and the motion conversion module converts the reciprocating linear motion of the reciprocating axis of the mover into The circular motion of the rotating shaft of the power unit, the rotating shaft of the power unit directly acts on the wheels after being transformed by the gear box, and drives the wheel drive shaft and the wheels to rotate. 9. A power driving method suitable for four-wheel drive electric vehicles according to claim 8, characterized in that: when the piston is in the initial position, the mover piece and the drive coil are in position X, and the follower triggers Close switch; when the piston moves to the end position, the mover piece and the drive coil move to position Y, and the follower triggers the break switch. 10. A power driving method suitable for four-wheel drive electric vehicles according to claim 8, characterized in that: the rotation directions of the driven parts corresponding to the rotating shafts of the power device installed on both sides of the second power driving module are opposite, This ensures that the front and rear wheels of the car rotate in the same direction.